2/12/2008 @ 6:00AM

In Depth: World's Most Expensive Rental Markets

10. Osaka, Japan

$2,564 a month

With one of the largest population densities in the world, Japan houses an extremely dense stock of rental apartments in its centers of commerce. Still, there’s not enough supply to meet demand in prime locations. Thanks to the soft yen, prices are down from $2,574 in 2006.